Shaft-alining device.



E. s. PERRIS. SHAFT ALINING DEVICE.

APPLIUATION FILED AUG. 26, 1908. 958,736, Patented May 24, 1910..

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E. S. FERRIS. SHAFT ALINING DEVICE. APPLICATION FILED we. 26, 190B.

Patented May 24, 1910.

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E. S.-FERRIS.

SHAFT ALINING DEVI,

APPLICATION FILED AUG. 2 1 a.

958,736. Patented May 24, 1910.

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ATTORNEY.

EDGAR S. FERRIS, OF HOLYOKE, MASSACHUSETTS.

SHAFT-ALINING DEVICE.

Specification of Letters Patent.

Patented May 24, 1910.

Application filed August 26, 1908. Serial No. 450,371.

To all whom it may concern:

Be it known that I, EDGAR S. FERRIS, a citizen of the United States ofAmerica, residing at Holyoke, in the county of Hampden and State ofMassachusetts, have in vented new and useful Improvements inShaft-Alining Devices, of which the following is a specification.

My present invention relates to improvements in shaft alining devices,and it has for its object to provide a device that is efficient inoperation and one that will not get out of adjustment after being set.

A further object is to provide a device that can be readily adapted toassume various positions with relation to the shaft to be alined.

Broadly stated, the invention consists in securing a fixed target nearone end of the shaft to the ceiling of the room or on the fioor ifdesired, and at a constant distance from the center of the shaft, thensetting up a transit at the other end of the shaft (or it is referableto secure the transit from the celling), then in temporarily securing tothe shafting at various points along the same, a device which isprovided with a target, or cross lines, and also with a plumb line andleveling device, whereby when the device carrying the target and crosslines is hung from the shaft-ing at various points thereon and thetarget thereon brought into the line of sight between the transit andfixed target the shaft will be properly alined.

Referring briefly to the various figures of the drawings; Figure 1 is aplan view of the general scheme of alining a shaft, showing arrangementof the transit, a fixed target, and the movable target on the shaft.Fig. 2 is an enlarged side elevation of the fixed target that is adaptedto be secured to the ceiling of the room. Fig. 3 is a plan view of thetransit supporting table or platform taken on the sectional line 3-3 ofFig. 4. Fig. 4 is an milarged detail view of the transit supportingtable secured to the ceiling and showing in dotted lines the transit andthe end of the shaft to be alined. Fig. 5 shows the hanger device thatis adapted to be temporarily clamped to the shaft, and which is providedwith a screw adjusting device and the means for supporting the targetcarrying the cross lines and plumb bob. Fig. 6 is a detail sectionalplan View on the line 66 of Fig. 5 showing the means of retaining thelevel in place. Fig. 7 is a detail sectional plan view on the line 77 ofFig. 5 looking downward in the direction of the arrows.

Referring to the drawings in detail, a designates the shaft to bealined, which is supported in the usual hangers designated at b. Cdesignates as a whole the transit that is secured to the ceiling of theroom as clearly shown in Fig. 4, and cl indicates a fixture that is alsosecured to the ceiling (a detail view of a modification of which isshown in Fig. 2), 6 being the arm thereof which carries the target fthat is secured to the arm 6 which arm is adjustably secured to theblock 9 by means of the set nut g.

2 is a vertical rod which is secured to the ceiling and on which isadjustably secured the block j by means of the set-screw is.

m designates as a whole (see Fig. l) the hanger device that is adaptedto be temporarily secured to the shaft which is to be alined, the detailconstruction of which will be referred to later.

Referring now to the transit supporting means which is shown in detailin Fig. 4 the line a is supposed to represent the ceiling in which ahook or other supporting means 0 is secured. Attached to this hook is arod p. This rod is adapted to be clamped to a sleeve 9 by means of thescrew 7'. s designates a bifurcated member having an integral part 2.that is adapted to be adjustably clamped in the sleeve or tube 9 bymeans of the screw a, the lower end of the arm ortion o and w supportsthe table or plat orm w on which the transit shown at 3 is supported. 2are tubes suitably secured to the ceiling n and slidably and adjustablymounted in the tubes are the rods 2 and 3 by means of the screws 4.These rods are pivotally connected to the brackets 5 and 6 that areadjustably secured to the arms 4; and w by means of the wing nuts 7 and8. The telescope of the transit is designated at 9 which is providedwith the usual cross hairs. The relation of the transit to the shaft a,to be alined, is shown in Fig. 4, in dotted lines in end elevation andin plan view in Fig. 1. By loosening the screws 7 and 8 and a theplatform as may be raised and lowered as readily understood.

Referring now to the construction of the fixed target which is shown indetail in Fig. 2, and is somewhat different in construction from thatshown in Fig. 1. The ceiling is represented at n in which a hook 10 issecured. Attached to this hook is a rod 11 that is adjustably secured inthe sleeve 12, the lower end of which is provided with a block 13 towhich is pivotally secured the rods 14 and 15 by means of pins passedthrough the ears 1.6 of the block 13. The rods are adapted to beadjustably secured in the tubes 17 and 18 by means of the set nuts 19,and the tubes 17 and 18 to the ceiling by any suitable means as thescrews 20. A nut 12 permits the target arm 6 to be raised and lowered inthe tube 12. It will therefore be seen that I have provided adjustablemeans for attaching the transit andfixed target to the ceiling of theroom and adjacent the shaft awhich is to be accurately alined. Thepractice heretofore has been to'employ shaft alining devices on thefloor of the room, but my improvement is designed to be attached to theceiling so that there will be absolutely no danger of the transitinstrument and target being thrown out of alinement after they have beencarefully adjusted.

Coming now to the adjustable hanger device which I consider theimportant part of my invention, and wherein the same is so constructedthat it is always self-centering on the shaft and is provided withleveling and vertically adjusting means. This hanger device comprisestwo clamping members 21 and 22 having curved jaws 23 for engaging theshaft a to be alined; the inner portions of the jaws are notched asshown at 24 whereby the jaws, no matter what the diameter of the shaft amay be, will seat themselves on the shaft contacting only at the points,25, 26, 27 and 28. These jaws are pivotally connected to a common bar 29at the points 30 and 31. A right and left hand screw 32 is employed tomove the clamping jaws 21 and 22 in opposite directions so that shaftsof different sizes may be clamped. This screw is adapted to be moved bythe wheel 32. The screw 32 passes through nuts 33 which are arranged inopenings 34 of the jaws. The bar 29 it will be observed is made integralwith an arc-shaped member 35, and slidably mounted thereon is a secondarcshaped member 36, the same being held in place by means of the pins37. A screw 38 is rotatably mounted in the upturned end 39 of the member35, its inner end being threaded into the end of the second arc-shapedmember 36, whereby when the screw 38 is rotated the member 36 may bemoved on the member-35.

Piv'otally connected to the second areshaped member 36 at 36 by means ofthe arm 41 and screws 42 is a depending arm 43. This arm is providedwith an arm 44 which is adj ustably secured thereto by means of the hub45 and set-nut 46. A second arm 47 is also adjustably connected to thedepending arm 43 by means of the hub 48 and set-screw 49. Attached inthe outer end of the arm 44 is a plumb-bob and line 50 and 51, and thelower arm 47 is provided with a notch 52 whereby when the plumb line 51is in a vertical position the line will register with the notch 52.

Since the line 51 iscarried by the shaft 64 to be alined it isabsolutely necessary there fore that this line be brought into the lineof sight extending from the cross-hairs of the telescope at one end ofthe shaft to the crosslines of the fixedtarget at the other end of theshaft as will be more fully explained at the end of the specification indescribing the use of my improvement.

54 designates a target arm adjustably secured to the part 43 by means ofthe nut and collar 55. The target is'shown at 56 which is to be broughtinto alinement with the target when the improvement is used, and isadapted to be clamped to the arm 54 by means of the nut 56.

A level is shown at 57 that is necessary when the arms 21 and 22 areplaced in a horizontal position, and a level 58 is to be used when thearms are hung vertically as shown. The arms 44 and 47 may be shifted toarm 54 as shown in dotted lines at 44 and 47 when the arms 21 and 22 areshifted to a horizontal position.

The operation of my shaft alining device is as follows: After the fixedtarget f and transit 0 have been carefully adjusted and fixed inposition,the clamping aws 21 and 22 are placed on the shaft andtightened by means of the screw 32. The depending rod 43 is thenadjusted so as to hang in a verti- .cal position by means of thethumb-nut 38,

which operation brings the plumb-bob so that the line 51 registers withthe groove 52. The operator, after this adjustment,

then sights through the transit on to target .56. If the line of sightdoes not fall on the cross lines of the target, then the shaft ais moveduntil this adjustment or alinement of the shaft is effected, as readilyunderstood. If the shaft a is out of alinement it is moved in the usualmanner until the line of sight falls accurately on to the cross-lines ofthe target 56. This operation is repeated at various points until theentire shaft is brought into parallel relation with line of sightextending between the transit and the fixed target f. It is obvious thatthe clamping jaws 21 and 22 may be ar ranged at various positions on theshaft a, horizontally or at an angle so as to avoid objects that mayobstruct the line of sight.

IVhat I claim, is:

1. A shaft alining device having in. combination, a fixed target, atransit, a movable target, means for temporarily attaching the same tothe shaft, said'means including a pair of jaws having bearing points toengage the shaft, means for moving the jaws toward and away from theshaft, means carried by the jaws for determining the parallel relationbetween a vertical plane passing through the axis of the shaft and avertical plane passing through the line extending from the center of thetarget and the transit, said means including a p1umb-line, a hori zontalarm for supporting the line, a second arm having a notch therein, anarc-shaped member secured to the jaws, connecting means between the armand arc-shaped member and a thumb-screw for operating the arcshapedmember, whereby when the thumbscrew is operated the outer end of the armwhich supports the line will be raised and lowered and the line broughtinto registration with the notch in the second arm substantially asdescribed.

2. A shaft-alining device having in combination, a target fixed to asuitable support at one end of the shaft, a transit fixed to a suitablesupport at the other end of the shaft, a target-supporting device, meansfor temporarily securing the device to the shaft at various points alongits length, said device including two arc-shaped members, and means formoving one in relation to the other for effecting a constant relationbetween the center of the shaft and the center of the target, an arm, aplumb-line supported thereby, and a second arm for determining thevertical position of the device, as described.

EDGAR S. FERRIS.

lVitnesses E. ISABELLA ADAMS, H. W. BOWEN.

